Galvanizing-machine.



No.'7o7,322. Patented Aug.l I9, .1902.

n. HEATHHELD. GALVANIZING MACHINE.

(Application led Feb. 24, 1902.)

(No Model.)

Y Unirse mers RICHARD IfIEA'II-IFIELD, OF LONDON, ENGLAND.

GALVAN'IZING-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 707,322, dated August 19, 1902.

Application filed February 24, 1902. Serial No. 95,446. (No model.)

To all whom t wha/y concern.'

Be it known that I, RICHARD HEATHFIELD, a subject of the King of Great Britain, residing at 1 Leadenhall street, London, England, have invented a new and useful Improvement in GalVanizing-Machines,of which the following is a specification.

This invention relates to machinery for coating metal sheets with metals, and especially to machines for galvanizing iron, and is directed toward improving present machines.

Hitherto a single pair of rolls has been arranged in the galvanizing-bath for clearing away superiiuous metal from the sheet undergoing galvanization, said pair of rolls being arranged as a pair of partially-submerged exit-rolls by which the sheet is delivered from the bath of molten metal, said rolls being arranged close to the surface of the molten metal in order that after the sheet has passed between them it shall be unable to become coated once more with superfluous metal.

My invention consists in providing an extra pair'of rolls under and in close proximity to the exit-rolls, which I arrange submerged up to the nip in molten metal in order that superliuous metal may be more effectively removed from the sheet undergoing galvanization than has hitherto been the case, the greater portion of said superfluous metal being removed by theadditional pair of rolls which I provide and the remaining portion of the superliuous metal being removed by the pair of partially-submerged exit-rolls. In order that the superliuous metal may be effectively removed, I arrange the extra pair of i wholly-submerged clearing-rolls,which I provide as close to the exit-rolls as possible in order that after the sheet has passed through ypairs of clearing and exit rolls.

coating metal which it is necessary to use in coatinga sheet of given size is much reduced and, .further, the general appearance of the sheets is improved on account of the additional consolidating action provided by the extra pair of clearing-rolls.

The accompanyingdrawing illustrates in sectional elevation a galvanizing-bath provided with the extra pair of clearing-rolls and the specially-mounted guides as arranged according to my invention.

In said drawing, 1 2 form the pair of partially-submerged exit-rolls, below and in close proximity to which the rolls 3 4, forming the extra pair of clearing-rolls, are arranged, and between these two pairs of rolls the two guides 5 6 are situated, said guides being provided with hooks 7 7, which are hooked over tie-bars 8 8, passing between the frames 9, which support the rolls at their two ends, said frames being supported on the bath 10. The guide 11 is arranged to guide the sheet undergoing galvanizati'on from the end 15 of the bath 10 at ywhich the sheet enters to the pair of clearingrolls 3 4, said guide 11 being provided with hooks 12, which are hooked over a tie-bar 13. The upper guide 14 is fixed to the frames 9 in any suitable manner. 9 The guides 5 6 insure the sheet passing properly between the two If the sheet undergoing -galvanization becomes stuck, it

can readily be released by shaking the guides i 5, 6, or 11. This can be eected by inserting a ping the guides 5 and 6.

The pair of clearing-rolls 3 4 may suitably be driven by a spur-'wheel 16,v keyed on the axle of one of the rolls and engaging with a -spur-wheel17, keyed on the axle of one ofv the exit-rolls 1 2, said spur-wheel 17 being driven in any convenient manner.

Abent rod between the rolls 1 and 3 andtaptially submerged in the molten metal, the

clearing-rolls being arranged belowand in close proximity to the exit-rolls in order that ICO after the submerged rolls have cleared away i superiiuous metal from the sheet undergoing galvanization, the sheet may pass through as little molten metal as possible, substantially as described.

2. In a galvanizing-machine, the combination ofa bath containing molten metal, a pair of clearing-rolls wholly submerged in the molten metal, and a pair of exit-rolls submerged up to the nip in the molten metal, the clear ing-rolls being arranged below and in close proximity to the exit-rolls in order that after the submerged rolls have cleared away superfiuous metal from the sheet undergoing galvanization, the sheet may pass through as little molten metal as possible, substantially as described.

3. In a galvanizing-machine, the combination of a bath containing molten metal, apair of clearing-rolls,whollysubmerged in the molten metal, and a pair of exit-rolls partially submerged in the molten metal, the clearingrolls being arranged below and in close proximity to the exit-rolls in order that after the submerged rolls have cleared away superluous metal from the sheet undergoing galvanization, the sheet may pass through as little molten metal as possible, and guides arranged between the pair of clearing-rolls substantially as described.

4. In a galvanizing-machine, the combination of a bath containing molten metal, a pair of clearing-rolls wholly submerged in the molten metal,and a pair of exit-rolls partially submerged in the molten metal, and frames arranged on the bath and supporting said pairs of rolls, the said clearing-rolls being arranged below and in close proximity to the exit-rolls in order that after the clearing-rolls have cleared away superfluous metal from the sheet u ndergoing galvanization, the sheets may pass through as little molten metal as possible, and guides arranged between the pair of clearingrolls and the pair of exit-rolls, and upper and lower sets of guides leading to the clearingrolls, the upper set of which guides is fixed to the frames supporting the rolls and the lower set of which is at one end supported on the edge of the bath and at the other end is hooked over a tie-bar passing between the frames supporting the pairs of rolls, substantially as described.

5. In a galvanizing-machine, the combination of a bath containing molten metal, a pair of clearing-rolls wholly submerged in the molten n1etal,and a pair of exit-ro1ls partially submerged in the molten metal, and frames arranged on the bath and supporting said pairs of rolls, the said clearing-rolls being arranged below and in close proximity to the exit-rolls in order that after the clearing-rolls have cleared away superiiuous metal from the sheet undergoing galvanization, the sheet may pass through as little molten metal as possible, and a set of guides arranged between the two pairs of rolls on each lside of the path of the sheet undergoing galvanization, each set being provided with and supported by hooks hooked over tie-bars passing between the frames supporting the pairs ot' rolls, substantially as described.

G. In a galvanizing-machine, the combination of a bath containing molten metal, a pair of clearing-rolls wholly submerged in the molten metal, and a pair of exit-rolls partially submerged in the molten metal, and frames arranged on the bath and supporting said pairs of rolls, the said clearing-rolls being arranged below and in close proximity to the exit-rolls in order that after the clearing-rolls have cleared away superfluous metal from the sheet undergoing galvanization, the sheet may pass through as little molten metal as possible, and a set of guides arranged between the two pairs of rolls on each side of the path of the sheet undergoing galvanization, each set being provided with and supported by hooks hooked over tie-bars passing between the frames supporting the pairs of rolls, and upper and lower sets'of guides leading to the clearing-rolls, the upper set of which guides is fixed to the frame supporting the rolls and the lower set of which is at one end supported on the edge of the bath and vat the other end is hooked over a tie-bar passing between the frames supporting the pairs of rolls, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CLEMENT LEAN, ANNIE UNDERWooD. 

